Champaign and University of Illinois police are urging people to travel in twos after violent attacks on campus. The two law enforcement departments say they're working closely to come up with ways to counter the recent crime wave. Over the past two weeks, 12 incidents of mob action and robbery have taken place in the U. of I. campus area. Champaign Police Lieutenant Jim Clark says he is designating plainclothes and uniformed officers to monitor the campus. He says he's also delivering public safety alerts and bulletins to all students and staff.